﻿/**
 * Copyright © 2009, Najeeb Shaikh
 * All rights reserved.
 * http://www.mnemonicfs.org
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 
 * - Neither the name of the MnemonicFS Team, nor the names of its
 * contributors may be used to endorse or promote products
 * derived from this software without specific prior written
 * permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 **/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MnemonicFS.MfsUtils.MfsConfig;
using MnemonicFS.MfsExceptions;

namespace MnemonicFS.MfsCore {
    public partial class MfsOperations {
        [Serializable]
        public static class ConfigFile {
            #region << Config File Operations >>

            public static List<string> AllKeys () {
                return Config.GetAllKeys ();
            }

            public static string Value (string key) {
                if (key == null || string.IsNullOrEmpty (key)) {
                    throw new MfsIllegalArgumentException (
                        MfsErrorMessages.GetMessage (MessageType.NULL_OR_EMPTY, "Config key")
                    );
                }

                if (!Config.DoesKeyExist (key)) {
                    throw new MfsNonExistentResourceException (
                        MfsErrorMessages.GetMessage (MessageType.NON_EXISTENT_RES, "Key")
                    );
                }

                return Config.GetValue (key);
            }

            public static bool Exists (string key) {
                if (key == null || string.IsNullOrEmpty (key)) {
                    throw new MfsIllegalArgumentException (
                        MfsErrorMessages.GetMessage (MessageType.NULL_OR_EMPTY, "Config key")
                    );
                }

                return Config.DoesKeyExist (key);
            }

            public static bool New (string key, string val, List<string> commentLines = null) {
                if (key == null || string.IsNullOrEmpty (key)) {
                    throw new MfsIllegalArgumentException (
                        MfsErrorMessages.GetMessage (MessageType.NULL_OR_EMPTY, "Config key")
                    );
                }
                if (val == null || string.IsNullOrEmpty (val)) {
                    throw new MfsIllegalArgumentException (
                        MfsErrorMessages.GetMessage (MessageType.NULL_OR_EMPTY, "Config value")
                    );
                }
                if (Config.DoesKeyExist (key)) {
                    throw new MfsDuplicateNameException (
                        MfsErrorMessages.GetMessage (MessageType.ALREADY_EXISTS, "Config key")
                    );
                }

                return Config.AddKVPair (key, val, commentLines);
            }

            public static bool Delete (string key) {
                if (key == null || string.IsNullOrEmpty (key)) {
                    throw new MfsIllegalArgumentException (
                        MfsErrorMessages.GetMessage (MessageType.NULL_OR_EMPTY, "Config key")
                    );
                }
                if (!Config.DoesKeyExist (key)) {
                    throw new MfsNonExistentResourceException (
                        MfsErrorMessages.GetMessage (MessageType.NON_EXISTENT_RES, "Config key")
                    );
                }

                // TODO
                return true;
                //return Config.RemoveConfigKey (key);
            }

            #endregion << Config File Operations >>
        }
    }
}
